Fujitsu part number S26361-F3289-L280 identifies the S26361-F3289-L280 - Fujitsu 2.8GHz 6.4GT/s QPI 8MB SmartCache Socket FCLGA1366 Intel Xeon X5560 4-Core Processor, an enterprise-grade Intel Unboxed Processors unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include clock speed of 2.8 GHz, bus speed of 6.4 GT/s, cache of Intel Smart Cache, socket of FCLGA1366. Typical use cases include data-center server fleet refresh, replacement of dead-on-arrival CPUs under existing service contracts, second-socket population on partially-populated dual-socket boards, and lab/test rebuild programs. Pro Disk Network supplies the S26361-F3289-L280 to US business buyers. Stocked units ship same-day on in-stock orders placed before 3pm ET. Pro Disk Network applies a 90-day functional warranty. Free US ground shipping on orders over $150; same-day expedited (UPS Next Day Air, FedEx Priority) available at checkout.
The S26361-F3289-L280 is a Fujitsu intel unboxed processors component with clock speed 2.8 GHz, bus speed 6.4 GT/s, cache Intel Smart Cache. Pro Disk Network sells the S26361-F3289-L280 for $62.91 with same-day US shipping and a 30-day return guarantee.
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Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the S26361-F3289-L280 are shown on this page.
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30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: What socket does the S26361-F3289-L280 use?
Confirm the socket against your motherboard's CPU support list - Intel Xeon Scalable spans LGA 3647 (1st/2nd gen), LGA 4189 (3rd gen Ice Lake), and LGA 4677 (4th/5th gen Sapphire/Emerald Rapids). A BIOS update is often required for newer steppings even on the same socket. Email sales@prodisknetwork.com with your motherboard model for a compatibility check.
How fast does the S26361-F3289-L280 ship?
If in stock, the S26361-F3289-L280 ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
The S26361-F3289-L280 is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
VMware vSphere ESXi 8 Host — Per-CPU core count drives VVF/VCF licensing cost — choose 16–24 cores for cost-optimal density unless workload is core-bound.
Hyper-V Cluster Node — Windows Server Datacenter licenses by core, but Hyper-V scales linearly. Higher-clock, mid-core SKUs win for transactional workloads.
Citrix VDI Pool — Frequency-sensitive — prefer high-clock 16–18 core SKUs over high-core-count parts to maintain user-perceived snappiness.
Kubernetes / Tanzu Workers — Higher core count amortises better across many small Pods. EVC mode planning matters for live-migrate parity.
What is the S26361-F3289-L280?
The S26361-F3289-L280 is a Fujitsu server-class processor with clock speed 2.8 GHz and bus speed 6.4 GT/s, manufactured by Fujitsu. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of S26361-F3289-L280
Pros
Same-day shipping from our US warehouse cuts deployment lead time
Cons
Refurbished tier may have minor IHS markings
Tray packaging — no retail Intel/AMD cooler included
Frequently Asked Questions about S26361-F3289-L280
Is the S26361-F3289-L280 a genuine Fujitsu part?
Yes. Pro Disk Network sources every S26361-F3289-L280 as factory-original Fujitsu inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Fujitsu servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
What socket does the S26361-F3289-L280 use?
Confirm the socket against your motherboard's CPU support list - Intel Xeon Scalable spans LGA 3647 (1st/2nd gen), LGA 4189 (3rd gen Ice Lake), and LGA 4677 (4th/5th gen Sapphire/Emerald Rapids). A BIOS update is often required for newer steppings even on the same socket. Email sales@prodisknetwork.com with your motherboard model for a compatibility check.
How fast does the S26361-F3289-L280 ship?
If in stock, the S26361-F3289-L280 ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
What is the warranty on the S26361-F3289-L280?
New S26361-F3289-L280 units carry the full Fujitsu manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the S26361-F3289-L280?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Pro Disk Network Buyer’s Guide: Intel Unboxed Processors
Socket Compatibility, EVC Mode, and BIOS Revision Planning
Choosing the S26361-F3289-L280 for a server upgrade or replacement starts with socket compatibility. CPU sockets are tied to motherboard chipsets and revisions; a board that supports Skylake-SP may or may not support Cascade Lake-SP depending on BIOS. Before ordering, look up the motherboard QVL (qualified vendor list) and confirm the S26361-F3289-L280 appears with a supported BIOS version. If the BIOS needs an update, plan the flash before swapping CPUs — many systems will not POST long enough to flash with the wrong CPU installed.
AI Workloads, AMX, and the Inference Performance Story
For dedicated AI inference hosts, prioritize core count over clock speed. INT8 inference is bandwidth-bound, not frequency-bound, so a 32-core part at 2.5 GHz outperforms a 16-core part at 3.5 GHz on most LLM workloads. For mixed virtualisation + occasional inference workloads, prioritize clock speed — VDI and OLTP database workloads benefit from the higher frequency.